Control system of engine
US-10132273-B2 · Nov 20, 2018 · US
into the cylinder {or the pre-combustion chamber}
into the cylinder {or the pre-combustion chamber} · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F02M25/03 |
| Official title | into the cylinder {or the pre-combustion chamber} |
| Display label | into the cylinder {or the pre-combustion chamber} |
| Total patents | 195 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 7 |
| 2017 | 18 |
| 2018 | 39 |
| 2019 | 37 |
| 2020 | 27 |
| 2021 | 25 |
| 2022 | 13 |
| 2023 | 9 |
| 2024 | 5 |
| 2025 | 4 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for driving internal combustion engine, and air supply device
US-10107232-B2 · Oct 23, 2018 · US
Method and system for engine water injection
US-2018274488-A1 · Sep 27, 2018 · US
Methods and systems for a fuel injector
US-2018266339-A1 · Sep 20, 2018 · US
Homogeneous charge compression ignition linear generator
US-2018258845-A1 · Sep 13, 2018 · US
Method and system for controlling water injection
US-10059325-B2 · Aug 28, 2018 · US
Methods and system for injecting water at different groups of cylinders of an engine
US-2018238255-A1 · Aug 23, 2018 · US
Method and system for engine water injection
US-2018171937-A1 · Jun 21, 2018 · US
Methods and system for adjusting engine water injection
US-2018171936-A1 · Jun 21, 2018 · US
Methods and system for injecting water at different groups of cylinders of an engine
US-9976502-B2 · May 22, 2018 · US
Apparatus for furnishing water and method and apparatus for controlling an electric pump for furnishing water for injection into a combustion chamber of an engine
US-9964074-B2 · May 8, 2018 · US
Condensed water supply control apparatus for in-cylinder injection type internal combustion engine
US-9957884-B2 · May 1, 2018 · US
Water supply control apparatus for in-cylinder injection type internal combustion engine
US-9957922-B2 · May 1, 2018 · US
Method for knock control of an internal combustion engine
US-2018112631-A1 · Apr 26, 2018 · US
Methods and system for adjusting engine water injection
US-9945310-B1 · Apr 17, 2018 · US
System and methods for extracting water from an electric air conditioning system for water injection
US-2018079280-A1 · Mar 22, 2018 · US
System and methods for extracting water from a hvac system for water injection
US-2018079281-A1 · Mar 22, 2018 · US
Engine system
US-9915230-B2 · Mar 13, 2018 · US
Direct injection engine and control method thereof
US-2018066599-A1 · Mar 8, 2018 · US
Method and system for engine water injection
US-2018066609-A1 · Mar 8, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02M25/03?
- CPC F02M25/03 is the Cooperative Patent Classification code for “into the cylinder {or the pre-combustion chamber}.”
- How many patents are filed under CPC F02M25/03 (into the cylinder {or the pre-combustion chamber})?
- Our database includes 195 publications tagged with this CPC code.
- Is patent activity under CPC F02M25/03 growing?
- Publication counts under this code: 5 in 2024 vs 4 in 2025 (latest complete years).